Defensive publication

ABSTRACT

A METHOD OF PROMOTING ADHESION BETWEEN THE SURFACES OF SUBSTRATES SUCH AS ALUMINUM FOIL, CELLOPHANE, PAPER, POLYESTER AND THE LIKE AND THE SURFACE OF A POLYOLEFIN SUBSTRATE SUCH AS POLYETHYLENE OR POLYPROPYLENE TO WHICH THE FIRST MENTIONED SUBSTRATES DO NOT NORMALLY ADHERE. THIS INVOLVES COATING THE SUBSTRATE SURFACE WITH A WATER-DISPERSIBLE POLYESTER PRIMER DISPERSED IN AN AQUEOUS MEDIUM FOLLOWED BY DRYING. THE ADHESION PRODUCING POLYESTER PRIMER IS DERIVED FROM MONOMER COMPONENTS WHICH INCLUDE DICARBOXYLIC ACID, HYDROZYCARBOXYLIC ACID, AMINOCARBOXYLIC ACID, AMINOALCOHOL, GLYCOL, DIAMINE OR COMBINATIONS OF SUCH MONOMER COMPONENTS WHEREIN AT LEAST A PART OF THE TOTAL OF ALL SUCH MONOMER COMPONENTS IS A POLY (ETHYLENE GLYCOL), AND AT LEAST A PART OF SAID TOTAL IS ONE OR MORE OF SAID MONOMER COMPONENTS SUBSTITUTED WITH ONE OR MORE SULFONATE METAL SALT GROUPS. THE AQUEOUS DISPERSION OF THE POLYESTER PRIMER MAY BE APPLIED TO EITHER THE POLYOLEFIN SURFACE OR TO THE SURFACE OF THE SUBSTRATE TO BE ADHESIVELY JOINED THERETO. THE INVENTION ALSO INVOLVES THE USE OF THE POLYESTER PRIMER ITSELF AS AN INGREDIENT OF PRINTING INKS TO ADAPT SUCH INKS TO BE PERMANENTLY PRINTED ON POLYOLEFIN SHEET MATERIAL SUCH AS THAT COMPOSED OF POLYETHYLENE OR POLYPROPYLENE.

DEFENSIVE PULIQATION UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Dec.16. 1969. 869 OG. 68?. The abstracts of Defensive Publicationapplications are identified by distinctly numbered series and arearranged chronologically. The heading of each abstract indicates thenumber of pages of specification. including claims and sheets ofdrawings contained in the application as originally filed. The files ofthese applications are available to the public for inspection andreproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Ofiice makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED MARCH 9, 1971 PROCESS FOR PROMOTING ADHESION BETWEENPOLYOLEFLNS AND VARIOUS SUBSTRATES Charles H. Coney, 2008 CanterburyRoad, and John R.

Gossett, Jr., 2116 Glen Burn Road, both of Kingsport,

Tenn. 37660 Filed Apr. 20, 1970, Ser. No. 30,249 Int. Cl. (308;; 17/08;B32]: 27/28 US. Cl. 26029.2 No Drawing. 10 Pages Specification A methodof promoting adhesion between the surfaces of substrates such asaluminum foil, cellophane, paper, polyester and the like and the surfaceof a polyolefin substrate such as polyethylene or polypropylene to whichthe first mentioned substrates do not normally adhere. This involvescoating the substrate surface with a Water-dispersible polyester primerdispersed in an aqueous medium followed by drying. The adhesionproducing polyester primer is derived from monomer components whichinclude dicarboxylic acid, hydroxycarboxylic acid, aminocarboxylic acid,aminoalcohol, glycol, diamine or combinations of such monomer componentswherein at least a part of the total of all such monomer components is apoly(ethylene glycol), and at least a part of said total is one or moreof said monomer components substituted with one or more sulfonate metalsalt groups. The aqueous dispersion of the polyester primer may beapplied to either the polyolefin surface or to the surface of thesubstrate to be adhesively joined thereto. The invention also involvesthe use of the polyester primer itself as an ingredient of printing inksto adapt such inks to be permanently printed on polyolefin sheetmaterial such as that composed of polyethylene or polypropylene.

